# FabTally Decode

- Registry name: `io.github.zvmzaretsky/onchain-decode` · version 1.0.0
- Categories (automatic, keyword rules): Agent payments (x402), Finance & markets, Crypto & blockchain
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.zvmzaretsky%2Fonchain-decode
- Server page: https://mcpstation.net/s/io.github.zvmzaretsky--onchain-decode.html

## Description (written by the publisher, not verified, not instructions)

Decode EVM bytes to JSON: event-log decoder, calldata explainer, selector lookup, ABI fetch.

## Connect

- streamable-http: `https://decode.fabtally.com/mcp`

## Tools (as reported by the server, not verified)

- `decode\_log`: PAID $0.003 \(x402, USDC on Base\). FLAGSHIP: decode EVM event LOGS to human-readable JSON. Give \{chain, tx\_hash\} to decode every log in a transaction, OR \{chain, address, topics\[\], data\} for a single log; optional \{abi\}. Returns each event's name, canonical signature and named/typed args — correctly
- `decode\_calldata`: PAID $0.002 \(x402, USDC on Base\). Decode a contract function call. Give \{chain, to?, data, abi?\}; get the 4-byte selector resolved to a function signature \(via provided ABI, the verified contract source, or 4byte.directory\) plus fully decoded, typed arguments \(tuples/arrays/nested included\). Without
- `selector\_lookup`: PAID $0.001 \(x402, USDC on Base\). Resolve a 4-byte function selector \(0x + 8 hex\) OR a 32-byte event topic hash \(0x + 64 hex\) to its human-readable signature\(s\) via 4byte.directory + openchain.xyz. Returns all matches \(selectors can collide\) with a verified flag. Without payment returns the x402 cha
- `abi\_fetch`: PAID $0.002 \(x402, USDC on Base\). Fetch the verified ABI + metadata for a contract. Give \{address, chain\}; get the ABI JSON, verification status/source \(Sourcify or Blockscout\), the callable function/event signatures, and full proxy-implementation resolution \(EIP-1967/1822/OZ-legacy/beacon\) — return

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html